6 papers
Impulse-induced liquid jets from bubbles with arbitrary contact angles
Hiroyuki Miyoshi, Hiroya Watanabe, Ishin Kikuchi +1
This paper investigates the relationship between the contact angle of a spherical bubble attached to a tube submerged in a container and the jet speed induced by an impulsive accel…
Impact-induced viscoelastic bungee-jumper jets with uniform extension and stress
Kyota Kamamoto, Asuka Hosokawa, Yoshiyuki Tagawa
We investigate the dynamics of a "bungee-jumper" jet induced by an impulsive force, which retracts after reaching its peak extension. Despite the strongly extensional and highly no…
Granular focused jet
Kazuya U. Kobayashi, Pradipto, Yoshiyuki Tagawa
We investigated the formation of granular focused jets defined as narrow upward ejections of grains triggered by impulsive forces and shaped by kinematic focusing on a concave free…
Effect of converging shape of container on the velocity of impact-induced focused liquid jet
Hiroya Watanabe, Hiroaki Kusuno, Yoshiyuki Tagawa
We investigated the effect of container shape on the behavior of the impact-induced focused liquid jets by dropping a converging-shaped container (e.g., Kjeldahl flask) partially f…
Stress field in the vicinity of a bubble/sphere moving in a dilute surfactant solution
Hiroaki Kusuno, Yoshiyuki Tagawa
In this study, we experimentally investigate the stress field around a bubble rising in a dilute surfactant solution (20 < Re < 220, high Peclet numbers) whose surface gradually be…
A phase diagram of the pinch-off behavior of impulsively-induced viscoelastic liquid jets
Asuka Hosokawa, Kyota Kamamoto, Hiroya Watanabe +3
In this study, we systematically investigate the behaviors of viscoelastic liquid jets using an impulsive force, particularly in the high velocity and high elasticity regimes. The…